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Executive functions development

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https://www.readbyqxmd.com/read/28315589/the-multidimensional-card-selection-task-a-new-way-to-measure-concurrent-cognitive-flexibility-in-preschoolers
#1
Gal Podjarny, Deepthi Kamawar, Katherine Andrews
Most executive function research examining preschoolers' cognitive flexibility, the ability to think about something in more than one way, has focused on preschoolers' facility for sequentially switching their attention from one dimension to another (e.g., sorting bivalent cards first by color and then by shape). We know very little about preschoolers' ability to coordinate more than one dimension simultaneously (concurrent cognitive flexibility). Here we report on a new task, the Multidimensional Card Selection Task, which was designed to measure children's ability to consider two dimensions, and then three dimensions, concurrently (e...
March 15, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28314184/how-does-the-body-representation-system-develop-in-the-human-brain
#2
Aurelie Fontan, Fabien Cignetti, Bruno Nazarian, Jean-Luc Anton, Marianne Vaugoyeau, Christine Assaiante
Exploration of the body representation system (BRS) from kinaesthetic illusions in fMRI has revealed a complex network composed of sensorimotor and frontoparietal components. Here, we evaluated the degree of maturity of this network in children aged 7-11 years, and the extent to which structural factors account for network differences with adults. Brain activation following tendon vibration at 100Hz ('illusion') and 30Hz ('no illusion') were analysed using the two-stage random effects model, with or without white and grey matter covariates...
February 28, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28314129/crack-cocaine-inhalation-induces-schizophrenia-like-symptoms-and-molecular-alterations-in-mice-prefrontal-cortex
#3
Lorena Bianchine Areal, Alice Laschuk Herlinger, Fabrício Souza Pelição, Cristina Martins-Silva, Rita Gomes Wanderley Pires
Crack cocaine (crack) addiction represents a major social and health burden, especially seeing as users are more prone to engage in criminal and violent acts. Crack users show a higher prevalence of psychiatric comorbidities - particularly antisocial personality disorders - when compared to powder cocaine users. They also develop cognitive deficits related mainly to executive functions, including working memory. It is noteworthy that stimulant drugs can induce psychotic states, which appear to mimic some symptoms of schizophrenia among users...
March 6, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28306755/the-relationship-between-executive-functions-and-language-abilities-in-children-a-latent-variables-approach
#4
Margarita Kaushanskaya, Ji Sook Park, Ishanti Gangopadhyay, Meghan M Davidson, Susan Ellis Weismer
Purpose: We aimed to outline the latent variables approach for measuring nonverbal executive function (EF) skills in school-age children, and to examine the relationship between nonverbal EF skills and language performance in this age group. Method: Seventy-one typically developing children, ages 8 through 11, participated in the study. Three EF components, inhibition, updating, and task-shifting, were each indexed using 2 nonverbal tasks. A latent variables approach was used to extract latent scores that represented each EF construct...
March 17, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28306147/early-functional-limitations-in-cognitively-normal-older-adults-predict-diagnostic-conversion-to-mild-cognitive-impairment
#5
Sarah Tomaszewski Farias, Karen Lau, Danielle Harvey, Katherine G Denny, Cheyanne Barba, Anthony N Mefford
OBJECTIVES: To examine whether specific types of early functional limitations in cognitively normal older adults are associated with subsequent development of mild cognitive impairment (MCI), as well as the relative predictive value of self versus informant report in predicting diagnostic conversion to MCI. DESIGN: As a part of a longitudinal study design, participants underwent baseline and annual multidisciplinary clinical evaluations, including a physical and neurological examination, imaging, laboratory work, and neuropsychological testing...
March 17, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28297591/estrogen-replacement-improves-verbal-memory-and-executive-control-in-oligomenorrheic-amenorrheic-athletes-in-a-randomized-controlled-trial
#6
Charumathi Baskaran, Brooke Cunningham, Franziska Plessow, Vibha Singhal, Ryan Woolley, Kathryn E Ackerman, Meghan Slattery, Hang Lee, Elizabeth A Lawson, Kamryn Eddy, Madhusmita Misra
OBJECTIVE: Both estrogen and exercise may have cognition enhancing benefits; however, young oligomenorrheic/amenorrheic athletes (OA) with estrogen deficiency have not been evaluated for cognitive deficits. Our objective was to determine whether 6 months of estrogen replacement will impact cognitive domains in OA. We hypothesized that estrogen replacement would improve verbal memory and executive control in OA. METHODS: We performed cognitive assessments at baseline and after 6 months in 48 OA (14-25 years) randomized to estrogen (EST+) (oral 30 µg ethinyl estradiol [n = 16] or transdermal 100 µg 17-β-estradiol patch [n = 13]) or no estrogen (EST-) (n = 19) in an ongoing clinical trial...
March 14, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28295339/annual-research-review-childhood-maltreatment-latent-vulnerability-and-the-shift-to-preventative-psychiatry-the-contribution-of-functional-brain-imaging
#7
REVIEW
Eamon J McCrory, Mattia I Gerin, Essi Viding
BACKGROUND: Childhood maltreatment is a potent predictor of poor mental health across the life span. We argue that there is a need to improve the understanding of the mechanisms that confer psychiatric vulnerability following maltreatment, if we are to progress from simply treating those with a manifest disorder, to developing effective preventative approaches that can help offset the likelihood that such disorders will emerge in the first place. METHODS: We review extant functional neuroimaging studies of children and adolescents exposed to early neglect and/or maltreatment, including physical, sexual and emotional abuse across four neurocognitive domains: threat processing, reward processing, emotion regulation and executive control...
March 13, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28294464/assessing-connectivity-related-injury-burden-in-diffuse-traumatic-brain-injury
#8
Berkan Solmaz, Birkan Tunç, Drew Parker, John Whyte, Tessa Hart, Amanda Rabinowitz, Morgan Rohrbach, Junghoon Kim, Ragini Verma
Many of the clinical and behavioral manifestations of traumatic brain injury (TBI) are thought to arise from disruption to the structural network of the brain due to diffuse axonal injury (DAI). However, a principled way of summarizing diffuse connectivity alterations to quantify injury burden is lacking. In this study, we developed a connectome injury score, Disruption Index of the Structural Connectome (DISC), which summarizes the cumulative effects of TBI-induced connectivity abnormalities across the entire brain...
March 15, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28288322/skill-related-physical-fitness-versus-aerobic-fitness-as-a-predictor-of-executive-functioning-in-children-with-intellectual-disabilities-or-borderline-intellectual-functioning
#9
Esther Hartman, Joanne Smith, Suzanne Houwen, Chris Visscher
Children with intellectual disabilities (ID) or borderline intellectual disabilities (BIF) often demonstrate impairments in executive functioning (EF). Studies in typically developing children show that aerobic fitness (AF) is positively related with EF. Skill-related physical fitness (SF) might, however, be a stronger predictor of EF than AF, as cognitive challenges are inherent in application of these skills. In this study, AF and SF were examined simultaneously in relationship with domains of EF in children with ID or BIF...
March 10, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28287782/socioeconomic-health-and-psychosocial-mediators-of-racial-disparities-in-cognition-in-early-middle-and-late-adulthood
#10
Laura B Zahodne, Jennifer J Manly, Jacqui Smith, Teresa Seeman, Margie E Lachman
Racial disparities in cognitive performance exist across the life course, but it is not known whether mediators of disparities differ by age. Understanding sources of cognitive disparities at different ages can inform policies and interventions. Data were obtained for non-Hispanic Black and White respondents to The National Survey of Midlife Development in the United States from 3 age groups: 28-44 (N = 1210; 20% Black); 45-64 (N = 2693; 15% Black); and 65-85 (N = 1298; 11% Black). Moderated mediation models characterized direct and indirect effects of race on episodic memory and executive function composite scores through economic, health, and psychosocial variables as a function of age group...
March 2017: Psychology and Aging
https://www.readbyqxmd.com/read/28287580/measuring-and-altering-mating-drive-in-male-drosophila-melanogaster
#11
Christine L Boutros, Lauren E Miner, Ofer Mazor, Stephen X Zhang
Despite decades of investigation, the neuronal and molecular bases of motivational states remain mysterious. We have recently developed a novel, reductionist, and scalable system for in-depth investigation of motivation using the mating drive of male Drosophila melanogaster (Drosophila), the methods for which we detail here. The behavioral paradigm centers on the finding that male mating drive decreases alongside fertility over the course of repeated copulations and recovers over ~3 d. In this system, the powerful neurogenetic tools available in the fly converge with the genetic accessibility and putative wiring diagram available for sexual behavior...
February 15, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28285574/virtual-reality-exercise-on-a-home-based-phase-iii-cardiac-rehabilitation-program-effect-on-executive-function-quality-of-life-and-depression-anxiety-and-stress-a-randomized-controlled-trial
#12
Ágata Vieira, Cristina Melo, Jorge Machado, Joaquim Gabriel
PURPOSE: To analyse the effect of a six-month home-based phase III cardiac rehabilitation (CR) specific exercise program, performed in a virtual reality (Kinect) or conventional (booklet) environment, on executive function, quality of life and depression, anxiety and stress of subjects with coronary artery disease. METHODS: A randomized controlled trial was conducted with subjects, who had completed phase II, randomly assigned to intervention group 1 (IG1), whose program encompassed the use of Kinect (n = 11); or intervention group 2 (IG2), a paper booklet (n = 11); or a control group (CG), only subjected to the usual care (n = 11)...
March 13, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28284447/cognitive-disorders-in-children-s-hydrocephalus
#13
REVIEW
Dorota Zielińska, Anna Rajtar-Zembaty, Anna Starowicz-Filip
BACKGROUND AND OBJECTIVE: Hydrocephalus is defined as an increase of volume of cerebrospinal fluid in the ventricular system of the brain. It develops as a result of cerebrospinal fluid flow disorder due to dysfunctions of absorption or, less frequently, as a result of the increase of its production. Hydrocephalus may lead to various cognitive dysfunctions in children. MATERIALS AND METHODS: In order to determine cognitive functioning in children with hydrocephalus, the authors reviewed available literature while investigating this subject...
February 24, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28283381/a-comprehensive-review-of-the-quality-and-feasibility-of-dementia-assessment-measures-the-dementia-outcomes-measurement-suite
#14
REVIEW
Adam Bentvelzen, Liesbeth Aerts, Katrin Seeher, Jacqueline Wesson, Henry Brodaty
The diagnosis of dementia and the management of its associated symptoms are aided by high-quality assessment tools. However, there is disagreement on the optimal tools among abundant alternatives and lack of consistent quality standards across the different domains of dementia-related change (ie, cognition, severity, function, behavioral and psychological symptoms, delirium, quality of life). Standardization is difficult because the relevance of a measurement tool for health professionals may depend on the clinical setting and on the dementia type and severity...
March 7, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28281208/the-language-and-social-background-questionnaire-assessing-degree-of-bilingualism-in-a-diverse-population
#15
John A E Anderson, Lorinda Mak, Aram Keyvani Chahi, Ellen Bialystok
Research examining the cognitive consequences of bilingualism has expanded rapidly in recent years and has revealed effects on aspects of cognition across the lifespan. However, these effects are difficult to find in studies investigating young adults. One problem is that there is no standard definition of bilingualism or means of evaluating degree of bilingualism in individual participants, making it difficult to directly compare the results of different studies. Here, we describe an instrument developed to assess degree of bilingualism for young adults who live in diverse communities in which English is the official language...
March 9, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28281020/restricted-repetitive-behaviors-in-autism-spectrum-disorder-and-obsessive-compulsive-disorder-a-comparative-review
#16
Marina Jiujias, Elizabeth Kelley, Layla Hall
This review paper critically examines literature regarding restricted and repetitive behaviors (RRBs) in Autism Spectrum Disorder (ASD) and Obsessive-Compulsive Disorder (OCD). The similar behavioral profiles of these disorders presents the potential for confusion regarding diagnoses and intervention efforts. As such, this review highlights the similarities and differences between RRBs in ASD and OCD. The developmental trajectories of RRBs are presented, followed by an exploration of three constructs implicated in RRB manifestation: anxiety, executive functioning, and sensory phenomena...
March 9, 2017: Child Psychiatry and Human Development
https://www.readbyqxmd.com/read/28278276/mining-dynamic-noteworthy-functions-in-software-execution-sequences
#17
Bing Zhang, Guoyan Huang, Yuqian Wang, Haitao He, Jiadong Ren
As the quality of crucial entities can directly affect that of software, their identification and protection become an important premise for effective software development, management, maintenance and testing, which thus contribute to improving the software quality and its attack-defending ability. Most analysis and evaluation on important entities like codes-based static structure analysis are on the destruction of the actual software running. In this paper, from the perspective of software execution process, we proposed an approach to mine dynamic noteworthy functions (DNFM)in software execution sequences...
2017: PloS One
https://www.readbyqxmd.com/read/28277154/comprehension-of-direct-and-indirect-sarcastic-remarks-in-children-and-adolescents-with-tourette-s-syndrome
#18
Helena Drury, Shivani Shah, Jeremy S Stern, Sarah Crawford, Shelley Channon
Previous research has reported that aspects of social cognition such as nonliteral language comprehension are impaired in adults with Tourette's syndrome (TS), but little is known about social cognition in children and adolescents with TS. The present study aims to evaluate a measure of sarcasm comprehension suitable for use with children and adolescents (Experiment 1), and to examine sarcasm comprehension in children and adolescents with TS-alone or TS and attention deficit hyperactivity disorder (ADHD; Experiment 2)...
February 8, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28277150/socioeconomic-deprivation-and-the-development-of-neuropsychological-functions-a-study-with-street-children-in-ecuador
#19
Graham Pluck, Daniel R Banda-Cruz, M Victoria Andrade-Guimaraes, Ana F Trueba
Socioeconomic status (SES) is known to have a considerable influence on the development of neuropsychological functions. In particular there is strong evidence for less efficient development of prefrontal-cortex-related functions in children raised in low-SES households. "Street children" are a common feature of low SES in many low- and middle-income countries, and some researchers have suggested that the unique life experiences of street children may drive their neurocognitive development. This study compares a group of 36 former street children in Quito, Ecuador with a control group of 26 never street-connected schoolchildren...
March 1, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28276184/childhood-predictors-of-written-expression-in-late-adolescents-with-22q11-2-deletion-syndrome-a-longitudinal-study
#20
N Hamsho, K M Antshel, T L Eckert, W R Kates
BACKGROUND: 22q11.2 deletion syndrome (22q11DS) is the second most prevalent genetic syndrome and has a characteristic academic and behavioural phenotype. The primary objective of the current study was to examine the childhood predictors of written expression achievement in adolescents with 22q11DS. Written expression is an important skill that can impact an individual's overall academic performance, potentially resulting in increased levels of stress and exacerbation of psychiatric symptoms...
March 8, 2017: Journal of Intellectual Disability Research: JIDR
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